elapsed time calculation

raju patil

hi,
how to calculate a elapsed time,
when i load the form and i do some stuffs and then when i press on one button then it should show the amount of time in one textbox ( from form loading to clicking of button).

please help me...

13 Replies

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Vulpes12y ago
Accepted answer
There's one thing that would stop it compiling and that's if you're using .NET 3.5 (VS 2008) or earlier. That's because custom TimeSpan format strings weren't introduced until .NET 4.0.

If that's the case, then replace this line:

textBox1.Text = (DateTime.Now - startTime).ToString(@"hh\:mm\:ss");

with these two:

TimeSpan ts = DateTime.Now - startTime;
textBox1.Text = String.Format("{0:D2}:{1:D2}:{2:D2}", ts.Hours, ts.Minutes, ts.Seconds);
Peter Abbasi2y ago
Sorry for necro posting, but I've been searching for weeks now but there is not much documentation on using C# in PowerPoint _during_ a Presentation in Slideshow View. How would I implement the timer that appears in the comments here such that it would display continuously across all slides. Let's say I have a textbox named "timer" that I have ensured appears on ever slide. Is there a way to display the slideshow's running time, such that changing slides has no effect on the value inside that textbox named "timer"? Ideally it would start when the show starts, and continue running for the duration of the show.
Wim Sturkenboom12y ago
[quote]
ERROR:No overload for method 'ToString' takes 1 arguments
[/quote]
I've copied the code and it compiles (and runs) fine. Check the line where the error occurs to make sure it matches what Vulpes posted.
raju patil12y ago
ERROR:No overload for method 'ToString' takes 1 arguments
Vulpes12y ago
If you want to display a running time, then I'd use a Timer rather than Stopwatch:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
timer1 = new Timer();
timer1.Interval = 1000; // every second
timer1.Tick += timer1_Tick;
}

private Timer timer1;
private DateTime startTime;

private void Form1_Load(object sender, EventArgs e)
{
startTime = DateTime.Now;
timer1.Start();
}

private void timer1_Tick(object sender, EventArgs e)
{
textBox1.Text = (DateTime.Now - startTime).ToString(@"hh\:mm\:ss");
}

private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
timer1.Stop();
}
}
}
raju patil12y ago
what should i have to do to show that running time in textbox.
raju patil12y ago
thanx a lot JM Pollaerts......
raju patil12y ago
thanx a lot vulpes...

Guest User12y ago

This should do it:

  sw.Elapsed.ToString("c");

raju patil12y ago
it is showing values like 3297 ( means four digit values )
how to get it in hh:mm:ss
Vulpes12y ago
A quick demo app:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;

namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private Stopwatch sw;

private void Form1_Load(object sender, EventArgs e)
{
sw = Stopwatch.StartNew();
}

private void button1_Click(object sender, EventArgs e)
{
textBox1.Text = sw.ElapsedMilliseconds.ToString();
}

private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
sw.Stop();
}
}
}
raju patil12y ago
still not getting....
Guest User12y ago
You can use the StopWatch class.